Australia is facing a public health emergency as a diphtheria outbreak surges to levels not recorded in 35 years, pushing national case counts above 220. In response to the growing crisis, New South Wales (NSW) has announced a targeted, free vaccination initiative to curb the spread of the potentially fatal bacterial disease and boost lagging immunization rates across the state.
NSW Health Minister Ryan Park unveiled the plan at a Thursday press conference, issuing an urgent public call for residents to verify that their diphtheria vaccinations are up to date. Under the new policy, all doses and boosters will be provided at no cost to patients at Aboriginal Medical Services (AMS) and general practitioner (GP) clinics across NSW. Free access is also extended to all individuals under 19 years of age seeking immunization.
Park emphasized that immunization rates across NSW remain far lower than public health officials recommend, with particularly concerning gaps in coverage among Aboriginal and Torres Strait Islander communities. The state’s intervention comes in response to rising cases nationally, most of which are concentrated in the Northern Territory – the region that recorded Australia’s first diphtheria-related death in nearly a decade in recent weeks. While the outbreak is centered in northern Australia, cases have now spread across state borders: Queensland and South Australia have both reported detections, and NSW confirmed its first cases of the current outbreak earlier this week.
In a direct appeal to First Nations communities, Park specifically urged any Aboriginal or Torres Strait Islander resident who has not received a diphtheria booster in the last 10 years to access free immunization through their local AMS or GP. “Diphtheria has taken hold in some parts of northern Australia, and we need to keep people safe,” Park said. “The best way to do that is vaccination.”
As Australia’s most populous state with the country’s largest public health system and most extensive resources, NSW has committed to ongoing monitoring of the outbreak and stands ready to expand its response if needed. Park noted that the diphtheria outbreak is a shared national challenge, and NSW is willing to contribute additional support to affected regions as the situation evolves.
Diphtheria is a highly contagious bacterial infection that can cause severe respiratory damage, heart and nerve complications, and even death in unvaccinated individuals. Public health officials have long emphasized that widespread immunization is the most effective prevention strategy against the disease, which was largely controlled in high-income countries through routine vaccination programs for decades.